lU'TKYI.LUS CALYCULATUS. 75 



10. Botryllus calyculatus up. nov. 

 (Plate LXIII, fig. 5.) 



( 'o/oitt/ gelatinous, transparent, lead-coloured, nearly 

 globular. ImUciJiudx pale, spotted with lead-colour; 

 arranged in circles of six to eight around a prominent, 

 thin, cup-shaped common oriiice, with a smooth rim, 

 a little angulated on each side (PL LXIII, tig. 5). 

 BrtiHt-liiul np/'iinre with a raised rim; four triangular 

 plates visible inside with intermediate tentacular 

 filaments. 



Diainrfn- of mass about a quarter of an inch (6 mm.). 



Hab. On a Cellularia attached to an anchor 

 (Peach). 



SCOTLAND. South Bay, Peterheacl (Peach), 

 thirst record. Alder & Hancock; coll. Peach. 



The above description is taken from Mr. Peach's 

 notes and sketches of a very curious Botri/Uus got by 

 him at Peterhead. The much-raised cup-formed 

 cloacal aperture is very peculiar. Mr. Peach describes 

 it as having a filmy appearance and waving to and fro 

 when the water was agitated. The triangular ten- 

 tacular plates are also different from anything hitherto 

 observed in a Botnjllns. The only specimen found 

 appears to have been in a young state. 



11. Botryllus bivittatus Milne Edwards. 

 (Plate LXIII, fig. 6, and PL LXVI, fig. 4.) 



Botryllus bivittatus MILNE EDWARDS Obs. Ascidies comp. 

 [1841], p. 92, [in Mem. Acad. Sci. lust. France, XVIII 

 (1842), p. 308, pi. vi, ft'. 1, 7 a; THOMPSON in Ann. Nat. 

 Hist. (1) XIII (1844), p. 434, and in Rep. Brit. Assoc. 

 for 1843 (1844), p. 2(34; COCKS in Rep. Pt. Cornw. Polyt. 

 8oc. for 1849 (1850), p. 74;] THOMPSON Nat. Hist. Ireland, 

 IV [1856], p. 362; [MERRIFIELD Nat. Hist. Brighton 

 (1860), p. 81; NORMAN in Zoologist, XVIII (1860), p. 

 7247 ; ANSTED & LATHAM Channel Isl. (1862), p. 219]. 



